The best replacement for ball joint is tie rod.

The best alternatives to ball joint are rated as following:
★★★★★  tie rod
★★★★★  cv joint
★★★★★  wheel bearing
★★★★  kingpin
★★★  heim joint
★★  ball bearing
★★  universal joint
★★  link pin
★★  control arm
★★  uni ball
★★  uniball
★★  kingpin dana 60
★  tie rod end
★  rod end
★  spherical bearing
★  bushing
★  strut
★  u joint
  kingpin vw
  king pin
  tie rods
  king pin dana 60

Your alternative for ball joint is not listed? Suggest!
Speaking about ball joint, one probably shouldn't forget about control arm.

Other search terms related to ball joint and their ratings are:
★★★★★ control arm
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ball joint
tie rod
cv joint